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Finding the Fourth Proportional to 887,003.90, 1,330,505.85 and 354,906.80

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Solution

The fourth proportional to 887,003.90, 1,330,505.85 and 354,906.80 is: 532,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,003.90 : 1,330,505.85 = 354,906.80 : x
  2. Step 2: Convert to fraction form
    887,003.90/1,330,505.85 = 354,906.80/x
  3. Step 3: Cross multiply
    887,003.90x = 1,330,505.85 × 354,906.80
  4. Step 4: Simplify right side
    887,003.90x = 472,205,573,604.78
  5. Step 5: Solve for x
    x = 472,205,573,604.78/887,003.90
  6. Step 6: Final answer
    x = 532,360.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.